<?php
add_action('wp_head', 'disable_follow_submit_btn');
function disable_follow_submit_btn()
{
?>
    <script type="text/javascript">
    function isEmail(emailAddress) {
        var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
        return pattern.test(emailAddress);
    };
    
    jQuery(document).ready(function($)
    {
        // Open new tab when click from email
//        function getParameterByName(name) {
//            name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
//            var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
//                results = regex.exec(location.search);
//            return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
//        }
//        if(getParameterByName('st') != '')
//            window.open(getParameterByName('st'));
        
        // DISPLAY AT RIGHT SIDE BAR
        $('#follow-form').submit(function(){
            
            var qr = $('#email-follow').val();
            if(!qr)  //if search query is null, then do nothing
                return false;
            if(!isEmail(qr)) // Check valid email address
            {
                alert('Email address not valid !');
                return false;
            }
                
        });
        // DISPLAY AT FOOTER
        $('#follow-form-f').submit(function(){
            
            var qr = $('#email-follow-f').val();
            if(!qr)  //if search query is null, then do nothing
                return false;
            if(!isEmail(qr)) // Check valid email address
            {
                alert('Email address not valid !');
                return false;
            }
                
        });  
        // DISPLAY AT STORE DETAIL
        $('#follow-form-s').submit(function(){
            
            var qr = $('#email-follow-s').val();
            if(!qr)  //if search query is null, then do nothing
                return false;
            if(!isEmail(qr)) // Check valid email address
            {
                alert('Email address not valid !');
                return false;
            }
                
        });           
    });
    </script>
<?php
}
?>